Phenol-furfuryl alcohol resinous condensation products



phenol-formaldehyde condensation Patented June 8, 1943 PHENOL-FURFURYL A CONDENSATIO LCOHOL nEsmoUs N PRODUCTS Ernst Korten, Frankfort-on-tbe-Main-Fechenhelm, Germany, assignor to & Film Corporation,

. ration of Delaware General Aniline New York, N. Y., a corpo- No Drawing. Application August 13, 1940, Serial '3 Claims.

The present invention relates. to resinous condensation products more particularly to those obtainable by condensing an aromatic compound containing at least one phenolic hydroxy'group with furi'urylalcohol in the presence of a condensing agent which has an acid reaction during the process of condensation.

The reaction may be carried out in the presence or absence of a diluent, either in a single operation or in several steps.

As suitable reaction components there may be named for instance monophenols, hydroxybenzylalcohols or naphthols.

'I'he'present condensation products are r'esinous compounds corresponding mostly as to their physical and chemical behaviour *with the the final state they yield, when usual fillers are added, mostly dark non-melting moulding articles of a remarkable mechanical stability and a bright surface, which are insoluble in all'of the usual solvents.-

They may be mixed with other natural or artiilcial resins, such as phencl-, urea-, aminotria-' zine-, aniline-, alkydor ketone resins.

The present new products are suitable for the manufacture of plastic and moulding powders, glueing agents, lakes, films and other artificial masses.

In order to further illustrate my invention the following examples are given, the parts being products. In

In Germany August 17, 1939 and polyvalen't o solution of 30% Example 2 A mixture of 98 parts of furiurylalcohol, 31.5 parts of phenol, 200 parts of water and 10 parts of a dilute hydrochloric acid (density 1.018) is heated at about 75 for about 18 hours. After having removed the water the residue is washed out until neutral. Then to 100 parts of the residue 400 parts of water, 25 parts of ammonia strength and 100 parts of a formaldehyde strength are added and the mixture is heated at 50to 60 for about 10 hours.

The condensation product thus formed is then washed out until a neutral reaction and worked up as described in the foregoing example while i well kneading or milling.

The moulded bodies thus obtained are very similar tothoseas described in Example 1.

Example 3 A mixture of 98 parts of iuriurylalcohoi, 62 parts of a technical mixture of orthoand parahydroxybenzylalcohol, 100 parts of water and 10 by weight and all temperatures in degrees centigrade.

Example 1 I ofan advantage, to further on purify the product before the addition of a filler by dissolving the raw product in alcohol and to isolate the resin when cold in order to remove ingredientsof a lower degree of condensation. Then to the residue parts of wood dust as filler are added and the mixture is slowly heated at. about 100 while continuously kneading or milling the mass. Then the hard product of alight brown color thus obtained is finely pulverized. With the a is heated for about 17 hours at about parts of a dilute hydrochloric acid (density 1.018) is heated for about 6 hours at about. 75. The aqueous layer is separated and the residue is worked up as described in Example 1. The moulded body thus obtained is very similar to those of the foregoing examples.

Example 4 A mixture of 124 parts of a technical mixture of orthoand para-hydroxybenzylalcohol, 100 parts of water, 98 parts of furfurylalcohol and 10 parts of a dilute hydrochloric acid (density 1.018) and the reaction product is,worked up as described in Example 1. When using cellulose as filler a moulded body of very similar properties as described above is obtained.

In the same manner a mixture of 01128015,

resorcinol or pyrogallol can be condensed with furiurylalcohol with the formation of dark resins.

Example 5 A mixture of parts of 2.6-dihydroxynaphthalene, 98 parts of furfurylalcohol, 50 parts of water and 10 parts of a dilute hydrochloric acid (density 1.018) is condensed and worked up as described in Example 1. Moulded bodies of similar properties are obtained.

Instead oi hydrochloric acid likewise other 2. Resinous condensation products obtained by condensing only phenol with furi'urylalcohol in the presence of a dilute solution oi a condensing agent which has an acid reaction during the process 01 condensation.

3. Resinous condensation products obtained by condensing only a technical mixture of orthoand para-hydroxybenzylalcohol with furi'urylalcohol in the presence of..a dilute solution of a condensing agent which has an acid reaction during the process of condensation.

ERNST KORTEN. 

